Jinhao Roller Ball Pen Double Silver Dragon Playing Pearl Engravement Refill : standard . Jinhao has two type refills for their rollerball pens . One is push type while other is screw type . If your refill is push type ,you can purchase the jinhao push type refills (ASIN :B0130LL8L0 ) . If you refill is screw type , it works with jinhao and montblanc screw type refill ( ASIN : B01LX1D6WI) Capped length 143mm Diameter 15mm , pen weight 100g Package : One pen as picture shown